Re: Farewell Sonos
If you did own a Sonos I wonder if changing the T&Cs to something you no longer agree with provides a case for you to return the goods for a full refund?
I don't believe that anyone managed it when Sony released a firmware update that removed functionality from the PS3.
IIRC, they used a similar sort of language as Sonos in that if you wanted to keep the OtherOS function, you simply didn't have to install the (unremovable) update. Though in reality if you wanted to play any games released after that, you had to install the 'optional' update.